BD4944FVE-TR

Overview

The BD4944FVE-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply voltages in electronic circuits. It features a typical under-voltage detection threshold of 4.4 V with a precision of ±1%. The device operates within a reset active voltage range of 0.95 to 10 V and utilizes a CMOS output type with a low-active reset state. It does not include a manual reset or watchdog timer function. The component supports an operating temperature range from -40°C to 105°C and is housed in a VSOF5 package measuring 1.6x1.6 mm with a thickness of 0.6 mm.

Feature Summary

• CMOS output interface providing low-active reset signal
• High accuracy voltage detection with ±1% precision
• Compact VSOF5 surface-mount packaging

Applications

• Power supply voltage monitoring
• Microprocessor reset circuits
• Battery backup systems

Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet before procurement. Confirm that the VSOF5 footprint matches the target PCB layout. Check current supply status as this component may be subject to end-of-life restrictions. Ensure compatibility with the required operating temperature range and voltage thresholds for the intended application design.

Selection Notes

Select this component when a precise 4.4 V detection threshold is required with CMOS output characteristics. Consider the VSOF5 package size constraints and the absence of delay timers or manual reset features. Evaluate the ±1% precision requirement against system tolerance needs. Verify that the 0.95 to 10 V reset active range covers the expected input voltage variations during operation.

Part Context

This part belongs to the BD49 series of standard voltage detectors from ROHM Semiconductor. These devices are engineered for reliable supervision of single-channel voltage inputs. The series typically offers high accuracy and low power consumption suitable for portable and industrial electronics requiring stable power management.

Replacement Considerations

BD5244G-1 is listed as a recommended replacement with similar specifications.